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<!-- Copyright (C) 2003 Red Hat, Inc. --><!-- This material may be distributed only subject to the terms --><!-- and conditions set forth in the Open Publication License, v1.0 --><!-- or later (the latest version is presently available at --><!-- http://www.opencontent.org/openpub/). --><!-- Distribution of the work or derivative of the work in any --><!-- standard (paper) book form is prohibited unless prior --><!-- permission is obtained from the copyright holder. --><HTML><HEAD><TITLE>Files and Directories [POSIX Section 5]</TITLE><meta name="MSSmartTagsPreventParsing" content="TRUE"><METANAME="GENERATOR"CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+"><LINKREL="HOME"TITLE="eCos Reference Manual"HREF="ecos-ref.html"><LINKREL="UP"TITLE="POSIX Standard Support"HREF="posix-standard-support.html"><LINKREL="PREVIOUS"TITLE="Process Environment [POSIX Section 4]"HREF="posix-process-environment.html"><LINKREL="NEXT"TITLE="Input and Output [POSIX Section 6]"HREF="posix-input-and-output.html"></HEAD><BODYCLASS="SECT1"BGCOLOR="#FFFFFF"TEXT="#000000"LINK="#0000FF"VLINK="#840084"ALINK="#0000FF"><DIVCLASS="NAVHEADER"><TABLESUMMARY="Header navigation table"WIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><THCOLSPAN="3"ALIGN="center">eCos Reference Manual</TH></TR><TR><TDWIDTH="10%"ALIGN="left"VALIGN="bottom"><AHREF="posix-process-environment.html"ACCESSKEY="P">Prev</A></TD><TDWIDTH="80%"ALIGN="center"VALIGN="bottom">Chapter 31. POSIX Standard Support</TD><TDWIDTH="10%"ALIGN="right"VALIGN="bottom"><AHREF="posix-input-and-output.html"ACCESSKEY="N">Next</A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><DIVCLASS="SECT1"><H1CLASS="SECT1"><ANAME="POSIX-FILES-AND-DIRECTORIES">Files and Directories [POSIX Section 5]</H1><DIVCLASS="SECT2"><H2CLASS="SECT2"><ANAME="AEN13039">Functions Implemented</H2><TABLEBORDER="5"BGCOLOR="#E0E0F0"WIDTH="70%"><TR><TD><PRECLASS="SCREEN">DIR *opendir( const char *dirname ); struct dirent *readdir( DIR *dirp ); int readdir_r( DIR *dirp, struct dirent *entry, struct dirent **result ); void rewinddir( DIR *dirp ); int closedir( DIR *dirp ); int chdir( const char *path ); char *getcwd( char *buf, size_t size );int open( const char * path , int oflag , ... ); int creat( const char * path, mode_t mode ); int link( const char *existing, const char *new ); int mkdir( const char *path, mode_t mode ); int unlink( const char *path ); int rmdir( const char *path ); int rename( const char *old, const char *new ); int stat( const char *path, struct stat *buf ); int fstat( int fd, struct stat *buf ); int access( const char *path, int amode ); long pathconf(const char *path, int name); long fpathconf(int fd, int name);</PRE></TD></TR></TABLE></DIV><DIVCLASS="SECT2"><H2CLASS="SECT2"><ANAME="AEN13042">Functions Omitted</H2><TABLEBORDER="5"BGCOLOR="#E0E0F0"WIDTH="70%"><TR><TD><PRECLASS="SCREEN">mode_t umask( mode_t cmask ); int mkfifo( const char *path, mode_t mode ); int chmod( const char *path, mode_t mode ); // TBA int fchmod( int fd, mode_t mode ); // TBA int chown( const char *path, uid_t owner, gid_t group ); int utime( const char *path, const struct utimbuf *times ); // TBA int ftruncate( int fd, off_t length ); // TBA</PRE></TD></TR></TABLE></DIV><DIVCLASS="SECT2"><H2CLASS="SECT2"><ANAME="AEN13045">Notes</H2><P></P><UL><LI><P> If a call to <TTCLASS="FUNCTION">open()</TT> or <TTCLASS="FUNCTION">creat()</TT> supplies the third _mode_ parameter, it will currently be ignored. </P></LI><LI><P> Most of the functionality of these functions depends on the underlying filesystem. </P></LI><LI><P> Currently<SPANCLASS="emphasis"><ICLASS="EMPHASIS"> access()</I></SPAN> only checks the <SPANCLASS="emphasis"><ICLASS="EMPHASIS">F_OK</I></SPAN> mode explicitly, the others are all assumed to be true by default. </P></LI><LI><P> The maximum number of open files allowed is supplied by the CYGNUM_FILEIO_NFILE option. The maximum number of file descriptors is supplied by the CYGNUM_FILEIO_NFD option. </P></LI></UL></DIV></DIV><DIVCLASS="NAVFOOTER"><HRALIGN="LEFT"WIDTH="100%"><TABLESUMMARY="Footer navigation table"WIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top"><AHREF="posix-process-environment.html"ACCESSKEY="P">Prev</A></TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="ecos-ref.html"ACCESSKEY="H">Home</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top"><AHREF="posix-input-and-output.html"ACCESSKEY="N">Next</A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">Process Environment [POSIX Section 4]</TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="posix-standard-support.html"ACCESSKEY="U">Up</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top">Input and Output [POSIX Section 6]</TD></TR></TABLE></DIV></BODY></HTML>⌨️ 快捷键说明
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